Apparatus for casting jointed members



March 19, 1935. V G. c. CLARK 1.994572 APPARATUS FOR CASTING JOINTED MEMBERS Filed Fb. 8, 1934 4 Sheets-Sheet 1 INVENTOR.

I BY @eofye C C/anf.

ATTORNEY.

March 19, 1935. a. c. CLARK ,5 2

APPARATUS FOR CASTING JOINTED MEMBERS Filed Feb. 8, 1934 4 Sheets-Sheet 2 INVENTOR.

- 660/6 C. C/d/"k.

. BY 7 v ATTORNEY.

March 19, 1935r 4 G C; LA 1,994,572

" APPARATUS FOR CASTING JOINTED MEMBERS .Filed Feb. 8, 1934 4 Sheets-Sheet 3 aga.

' INVENTOR. Geo/ye C /d/ "/f. BY I I 1 ATTORNEY.

March 19, 1935. G. c. CLARK 1,994,572

APPARATUS FOR CASTING JOINTED MEMBERS Filed Feb. 8, 1934 4 Sheets-Sheet 4 INVENTOR.

66 6C: C/d/K. BY

ATTORNEY.

Patented Mar. 19. 1935 UNITED j STATES Parr-Em =The invention relates to appa'ratus for casting jointed members', and particularly for casting the toe and heel portions of an articulated hollow metalshoe-last. V l

5 The primary object of the invention is to provide' means for casting the'sectionsof a' jointed member withfinished joint faces whereby the expensive operation of machining such faces is eliminatedand'assurance can be hadthat the joint members of the articles to be cast will properly cooperate and interfit to provide the jointed'article'with the required shape, contour and interfitting relation.

A further object-is to provide means for casting sections ofa jointed member with integrally formedv joint-forming members.

A further object is to provide means for casting a member with apocketformed therein and open ata 'face thereof. i

A further object is to provide means for casting a'mmber having'a' projecting portion in which a preformed -memberis imbedded.

A further object is" to'pro'videmeans for casting a "member with a portion having a preformed member imbedded therein and with a bore for the reception of another member, said preformed member and last named member to sustain the wearto which the member to be cast issubjec'ted.

A- further object is to provide means for castinga member having a preformed tubular member imbedded therein with means for supporting said" preformed member and preventing molten metal from entering therein. I

i A further object is toprovide a casting ='fiask 35' with a chill forming at least one face of a mold impression'and asecond chill operatively supported by said first chill and projecting from said flask.

A further object is toprovide a casting flask with a chill forming at least one face of a mold impression and a second chill shiftably carried and operatively positioned by said-first chill.

-With the above and other-objects in view, the invention resides in the combination and arrange- 'ment of parts as hereinafter-set forth,shown in the drawings described and claimed, itbeing understood that changes in theprecise embodiment of *the' invention maybe made within the scope of what is claimed withoutdeparting"from the 'spirit of the invention. 7

In the drawings:' F Figure 1 is a view in side elevation of the shoe last tofbeca'st. p r I p 7 Figure 2 is a longitudinalvertical sectional view f the shoeia'st.

*Figure'3 "is a fragmentary perspective view of the toe'member'of the last.

Figure l is a' fragme'nt'ary perspective vie'w of the heel-member of the last.

Figure'5 is a fragmentary top plan-view of-the 5 drag and core supporting means or the casting apparatus for casting the toe member of the' la'st.

Figure 6 is a fragmentary longitudinal vertical sectional view of the toe member'casting appara m taken on line 6-6 of Figure 5.

Figure 'l 3 is a transverse vertical sectional view of the toe member ca'sting'apparatustaken online '7'7 of Figure'fi. i

Figure 8 is a fragmentary top plan view of the drag and core supporting means iaf-the appara-' tus forcasting' the heel memberbfthe last.

Figure '9'is a fragmentarylongitudinal vertical sectional view of the-heel' meniber castingapparatus taken on line 9-'-.9'of-Figure 8. I

Figure 10 is'a transverse verticalsectional view" of the heel member casting apparatus takenon 1i n e I0-l 0"of Figures. V

Figure ll is a perspective viewof' one part'of a chill carried by the toe member casting'apparatus'.

- Figure 12 is a perspective view'ofa'pin employed in the toe member casting apparatus.

I Figure'13 is a perspective view of 1 o'ne"par'tof a chill carried by the heel' "member castingappa ratus.

"Figure 14 isa perspective view of another part of me chm carried by the heel member casting apparatus. v r v Referring to the drawingsf-which illustrate'one embodiment of the invention, and particularly to Figures 1 to '4, thexnumeral 20' designates "fa hollow aluminum shoe last comprised of 1 a toe member -"21 and a! heel member 22, {which are pivotally interconnected. The; joint face 23; of toe r'nemb er 2l has 7 a; semi-cylindrical knuckle 24 projecting therefrom intermediate the sides there- 40 of and adjacent the lower face thereof the ax'isof said knuckle extending transversely of said joint face. On opposite sides of said knuckle; and concentric therewith are provided recesses'25. The

joint face 26 6f the heel member 22 nasa -payer spaced;aligned semi-cylindrical knuckles 2'?- pro jecting therefrom at opposite 1 sides thereof to" fit into the "recess szs of the toe member. A recess 28; concentricwith and between knuckles f27f is formedfin joint face 26 to'receive' knuckle 24 of the toe member of the last. Knuckles '27'have aligned central: apertures 29 formed therein, '-and knuckle 24 has a hard "metal" sleevefiopentrally imbeddedtherein, and the apertures receive ajoint inai which is journaled'in said'sleev'e' o.

Integrally formed with heel member 22 is a pocket member 32 whose mouth opens at the recess 28. This pocket mounts a coil spring 33 which urges a hard metal ball 34 against knuckle 24 of the toe member. A radial bore or opening 35, whose axis extends at an angle to the axis of pocket 32 when the last parts are positioned as illustrated in Figure 1, is formed in the knuckle 24 of the toe member, and in this bore 35 is fixedlly disposeda hard metal ball 36 which partially projects from the knuckle 24. v

The last members ,are relatively pivotal about pin 31, said pinbeing carried by knuckles 27 and journaled m sleeve 30. In the pivoting of the last members, the spring pressed ball 34 rolls over the portion of ball 36 projecting from knuckle 24,

and the last members'are thus thrown to and locked at one or the other of their extremes of pivotal movement. I a

The casting apparatus forming thesubject matter of this application is intended particularly for the casting of a jointed shoe last of the character above-described, and isillustrated in Figures 5 to 14. The apparatus utilizes a flask comprising a drag lil and a-cope 41, each of which is filled with formable material 42, such as sand, whichis flrmlypacked therein A- longitudinal shoulder 43 is carriedby and projects outwardly of the face of each of the longitudinal sides of thedrag, and these shoulders support a-frame 44 which isspaced from the sides of the drag for the major portion of its extent, but which carries a plurality of inwardly directed portions45 which engage the drag to position frame 44 in the exact required relation to the drag. A clamp 46 iscarried by the frame 44 to support an arbor 47 on which a core 48 is mounted, said arbor passing through suitable registering recesses in the drag and cope. Core ,48 is disposed in a mold impression- 49 formedin formable material 42 of the drag and cope.

The drag and copev each mount,-imbedded in thesand thereof, and operatively held by said sand, one part of a two-part chill 50, and the mold impression is formed in said drag and cope to expose atleast a portion of said chill, the latter-thus forming at least one face of said mold impression. These chills, as; well as cores 48, are

differently constructed for use in the casting of the toe member than for use in the casting of the-heel member. Figures 5, 6, '7, 11 and 12 illustrate the particular construction of the toe member flask, chill and core; and Figures 8, 9, 10,13 and 14illustrate the particular construction of the heel member flask, chill and core.

The chill member 51, illustrated in Figure 11, and. employed in'casting the toe member of the last, is carriedby the drag and comprises a ver-' tical plate 52 and ahorizontal plate53. Substantially centrally in horizontal plate 53 is formed a transverse recess 54 of semi-circular cross sectional outline for the reception of the core arbor 47, as-illustrated in Figure 5. In spaced relation to recess 54, a vertical recess 55 of semi-circular cross sectional outline is formed :Figure .12, for purposes to be hereinafter set forth.

The chill parts 51 carried by the drag and cope twice the dimension of the spacing of the adjacent horizontal faces of plug 56 and plate 53. v In the casting of the toe member of the last,

the preformed hard metal sleet 6:30 isinserted a over pin 59 of the drag-carried chill 51; pin 58 is disposed in chill recess 57 in a position to project partially into recess 55 at one end, and the J core 48 is positioned in the portion of impression 49 formed in the drag, the arbor 47 mounting said core being supported and positioned by frame 44 and by recess 54 of the chill 51. The cope 41 is then positioned on the drag in registering relation thereto, with the plates 53 of chills 51 disposed in face contacting engagement, and the aluminum or other metal of which the last is to be formed is then poured into the mold impression. The metal flows into and fills the mold impression49 and also the recess 55ofchill 51. After the metal has set, but preferably beforeiit has cooled, the cope is removed to permit withdrawal of pin 58 which forms opening or bore 35 in the knuckle 24, which knuckle is cast in the recess 55 of chill 51. When the metal has cooled the molded last member maybe remove'd'from the drag by vertical movement to release. the knuckle 2.4 and its. imbedded sleeve 30 from pin: 59. The last member-is thus cast against a chill.

which forms, in the casting operation,,theyjoint face thereof, including the knuckle 24-and recesses 25, and the ball receiving bore 35, and also" imbeds the sleeve 30 in the knuckle..." Thus the. a

only operation necessary to commercially complete themember is to finish thefaces thereof,

except the joint face, the finishing of which joint face in the casting operation simplifies the operation of the machine finishing bygiving a start from which to work and with reference to which v the machine finishing can be accuratelydone.

The chill member 60, illustrated in Figure 13;

and employed in molding the heel memberofthe last, comprises a horizontal plate 61 and vertical plates 62 and 63 which are relatively angularly disposed, A vertical recess 64 of arcuate'cross sectional shape is'formed infaces 62 and 63, and the center of said recess is coincident with the intersection of projections of the faces of, said? plates 62 and 63. transverse recess 65 of rectangular cross sectional; shape, thewidth of said recess 65 being substantially equal to the diameter of recess 64 and ter-,

of plate 62.

Inthe plate 61 is formeda. l

'65 minating at a point in alignment withthe face, By this construction ashoulder66'; 1

is formed between said recess 65 and plate 63,

the inner face of said shoulder being ofarcuate I shape. The depth of recess 65 slightly exceeds the spacing of theadjacent faces of plug ,56and, plate 53 of chill 51, is provided at the side thereofopposite plates.62

and 63, and recess 65 is' extended into said pro-5 jection. Recess 65 is adapted to receive member, 68 which is providedwithan arcuate. end .69.- This arcuate end 69 engages shoulder,66 and is operatively positioned thereby in amannerwhereby said arcuate end 69 is concentric with arcuate recess 64. Member 68 has integrally formed therewith a tapered member 70,-.of circular cross A projection 67 of plate 611 all for purposes to be hereinafter set forth,

- and proper fitting of the'joint portions and also ,In the castingof the heel-member of thelast, the core 48 is operatively and precisely positioned iri-the portion of the-impression formed in the drag by means of arbor- 4-.7' and-frame is. This heel forming core-has a recessor pocket 75 formed therein which opens in the direction of chill 61. Member 68 is then'inserted in recess 65 of chill 61 with its arcuate end 69 bearing on shoulder 66 of said chill, inwhich position the tapering members '70 and 71 carried-thereby extend centrally into the 'pocket75 of said core, with the'portion 71' of. said member 68 preferably bearing on the bottom-end of sand core pocket .75.; Member 68 isof a len th to project outwardly of the flask -members through registering recess 72 formed therein. -'Ihe cope is then mounted on the drag in registering relation thereto, and the metal is poured into the mold impression. When the met al has set, the member 68 is pulled -outwardly through chill recess 65, at least into spaced relaand the member 68 outlines the shape of the recess '28 of the last between saidknuckles, and also the bore of thepocket 32 formed by the metal which enters pocket 75 of the core 48. The tapered pin 'il'of member 68 forms an opening in the inner en'd'of pocket 32, of the last part and also serves to, prevent the formation of air holes in said pocket member 32. When cast, the heel part of the last is thus complete, except for the finishing of the surfaces otherthan the joint faces thereof, and for-the drilling of the holes 29which receivethe last pivotpin 31. 7

It will thus be seenthat, by the use of this apparatus, the parts of a shoe last may be cast with the'knuckles and joint-forming recesses and portions thereof formed integrally and by the same'lcasting operation. Furthermore, the joint faces, including the faces of these joint-forming portions, are cast' against'the chills and are therefore cast with finished surfaces which may also be somewhat hardened. The finishing of the sur faces in'the' casting operation assures uniformity provide'sa starting point from which the operation of finishing the remainder of the last parts by machine may be carried on, thus simplifying the problem involved in providing work holders for the machine finishing operation and assuring uniformity of outline of each last part. Another advantage obtained by the use of this apparatus is that one set of chills suffices for the casting of the last members of all sizes and shapes of lasts desired, the only requirement being that the mold impressions be properly formed with relation to the chills to provide the proper positioning of the join parts on the joint face of the member to be cast.

The invention having been set forth, what is claimed as new and useful is:-

1. In acasting apparatus for casting a hollow metal member, a flask having a mold impression formed therein, a core mounted in said impression, and a metal member carried by said flask to form one face of said impression, the face-forming portion ofsaid metal member having a recess formedtherein, and a-pair of cylindrical members fixedly mounted in said recess in spaced relation to provide the article to be cast with a recessed joint face and a projecting joint knuckle formed in said recess between said cylindrical members.

2. In a casting apparatus for casting a hollow formed therein, a core mounted insaid impression,'a chill comprising two parts having: aparting plane and mounted in said flask-t form one.

face of said impression, said chill having a recess metal member, a flask having a mold impressionp formed-in said face whose axis is. substantially I perpendicular to the parting plane of the chill, and a projection carriedby said chill in axial alignment with said recess, said chill providing the article to be cast with a joint face including a projecting joint knuckle; anda joint recess axial alignment.

3. In a casting apparatusfor casting;a metal article, a flask having an impression of the article to be cast formed therein, and a chill comprising two parts having a parting plane and mounted in said flask to form a p'ortion of the,

outline of said impression, each part of said chill having a recess formed therein and open to said impression whose axis is-perpendicular to the parting plane of the chill, and a projection carried by each chill part and extending into said.

impression in axial alignment withsaid recess,

the recesses of said chill parts registering where by, said chill provides the jointface of the article to be cast with a joint knuckle and a pair of spaced joint recesses on opposite sides of saicl knuckles and in axialalignment therewith. 4-1.11 an apparatus for casting a metal article, a twoepart flask having an impression of the article to be cast'formed therein, and a two-part.

chill having a parting plane and mounted in said flask to form a portion of the outline ,of 3

said impression, said chill having a recess whose axis is perpendicular to the parting plane of said chill formed therein and open to said impression,

a pair of spaced projections in axial alignment with and on opposite sides of said recess, one of said projections carrying a pin extending toward the other projection to mount a preformed sleeve,

said chill providing the joint face of the article imbedded therein. v 5. In an apparatus for casting a metal article,

to be cast with axially aligned joint recesses and I an intermediate joint knuckle having said sleeve a two-part flask having a casting impression formed therein, and a two-part chill havingaparting plane and mounted in said flask to form a portion of the outline of said impression, a projection on each chill part and extending into said impression, said projections being spaced, means carried by one of said projections for supporting a preformed tube perpendicularly of said parting plane and in axial alignment with said projections, said chill providing the joint face of the article to be cast with spaced joint recesses and an intermediate joint knuckle all in axial alignment and having the tube imbedded in the knuckle and open throughout its length and removable from said tube supporting means upon separation of the chill parts.

6. In an apparatus for casting a metal article with a projecting knuckle having an open-ended preformed member extending therethrough, a two-part flask having a casting impression formed therein, and a two-part chill having a parting plane, one chill part being mounted in each flask part, said chill parts cooperating to form a face of saidimpression, said chill parts having axially aligned registering recesses formed in said face and each recess opening to the parting face of said chill to provide an impression of said knuckle, and means carried by said chill for supporting said preformed member coaxially of said knuckle forming impression, whereby metal flows aroundsaid pre-formed member in the casting operation to form said knuckle, and said knuckle with its open ended imbedded member is removable upon separation of the chill parts.

7. Inan apparatus for casting a metal article, a flask having 'animpr'esison of said article formed therein, a chill mounted in said flask to form a face of said impression, said chill having a recess formed therein, means carried by said chill for supporting a preformed member in said recess with at least one end thereof bearing on one side of said recess and extending adjacent the opposite side of said recess, said chill having a guide opening extending angularly of said preformed member, and a member mounted in said said chill comprising two parts having a parting plane, the joint surface forming face of each chill parthaving a recess formed therein whose axis is perpendicular to the parting plane of the chill, and a projection carried by each chillpart at said joint surface forming face and in axial alignment with said recess, the recesses of said chill parts registering whereby the joint face cast against said chill'is provided with space joint recesses and an intermediate joint knuckle in axial alignment;

9. A chill for use in casting a section of an articulated shoe lastand adapted to be mounted in a casting flask to form the joint-surface face of the shoe last section impression of said flask, said chill comprising two parts having a parting plane, the joint surfaceforming face of each chill part having a recess formed therein whose axis is perpendicular to the parting plane of the chill, a projection carried by each chill part at said joint surface and spaced from said parting plane, said projection being axially aligned with said recess, one of said projections carrying a pin extending Ward the other ajamas mount a pre-formed sleeve, said chill providing the joint face of they-article to be cast with axially aligned joint recesses'and' an intermediate jointknuckle having said sleeve imbedded therein. 7

10. A chill for use in casting a sectionof an articulated shoe last and adapted to' be mounted in a casting flask to form the joint surface face of the shoe last section impression of saidv flask,

said chill comprising'two parts having agparting 1 plane, the joint surface'forming'face of each chill part having a recess formed therein whose'axis-is perpendicular to the parting plane of the 011111; 7 a projection carried by each chill part at said) joint surface and spaced from said parting-plane},

said projection being axially'alignedfwithsaid recess, and means carried 'by one of said projec-' tions for supporting a pre-formedtubein axial' I H alignment with said projections and recess, said chill providing the joint'face of the article to be cast with axially aligned joint recesses and an intermediate joint'lkriuckle having said sleeve imbedded therein. i l

11. A chill for'use in casting a sectiontof an articulated shoe last and adapted to'be mounted in a casting flask to form the joint surface facet" of the shoe last section impression of said flask,-

saidchill comprising two parts having a parting plane, the joint surface forming face of each chill part having a recess formed therein whose axis is-perpendicular to the parting plane of the V chill, and a projection carried by each chill part at said joint surface forming face and in axial; alignment with said recess, said chill parts having registering recesses formed in the: parting faces thereof and opening into saidfirst named recess, and a pin disposed in said registering recesses to project into said'firstnamed recess;

the first named recesses of said gchill parts regis-j tering whereby the joint face cast against said chill is provided with space joint recesses and an intermediate joint knuckle in axial alignment, said knuckle having an opening formedtherein extending angularly'of the axis of said knuckle GEORGE c. CLARK. 

